[Pkg-gmagick-im-team] Bug#853262: /usr/bin/convert: imagemagik fails to auto-detect xwd image format

[Sam Hartman]

Package: imagemagick-6.q16
Version: 8:6.9.7.0+dfsg-2
Severity: normal


In the past, if you passed an xwd file in on stdin using a command like
convert - /tmp/bar.jpg
it worked.
It still works if you do convert xwd:- /tmp/foo.jpg.
What seems to have broken is the autodetection of xwd from file.
as an example
convert baz.xwd baz.jpg # works

hartmans at permutation-city:tmp(3)> convert baz baz.jpg
convert-im6.q16: no decode delegate for this image format `' @ error/constitute.c/ReadImage/504.
convert-im6.q16: no images defined `baz.jpg' @ error/convert.c/ConvertImageCommand/3258.
hartmans at permutation-city:tmp(4)> file baz
baz: XWD X Window Dump image data, 113x23x8
hartmans at permutation-city:tmp(5)> 

I'd expect that the second would have also worked using file to detect xwd and then using that type.
I'm using file version 1:5.29-2)


-- Package-specific info:
ImageMagick program version
---------------------------
animate:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
compare:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
convert:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
composite:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
conjure:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
display:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
identify:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
import:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
mogrify:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
montage:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org
stream:  ImageMagick 6.9.7-0 Q16 x86_64 20161210 http://www.imagemagick.org

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (550, 'testing'), (500, 'stable-updates'), (500, 'stable'), (200, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages imagemagick-6.q16 depends on:
ii  hicolor-icon-theme     0.15-1
ii  libc6                  2.24-8
ii  libmagickcore-6.q16-3  8:6.9.7.0+dfsg-2
ii  libmagickwand-6.q16-3  8:6.9.7.0+dfsg-2

Versions of packages imagemagick-6.q16 recommends:
ii  ghostscript                  9.20~dfsg-1
ii  libmagickcore-6.q16-3-extra  8:6.9.7.0+dfsg-2
ii  netpbm                       2:10.0-15.3+b1

Versions of packages imagemagick-6.q16 suggests:
pn  autotrace                            <none>
ii  cups-bsd [lpr]                       2.2.1-4
ii  curl                                 7.51.0-1
pn  enscript                             <none>
ii  ffmpeg                               7:3.2.2-1
ii  fig2dev [transfig]                   1:3.2.6-3
ii  gimp                                 2.8.18-1
ii  gnuplot                              5.0.5+dfsg1-4
pn  grads                                <none>
ii  graphviz                             2.38.0-16
ii  groff-base                           1.22.3-9
pn  hp2xx                                <none>
pn  html2ps                              <none>
pn  imagemagick-doc                      <none>
ii  libwmf-bin                           0.2.8.4-10.6
pn  mplayer                              <none>
pn  povray                               <none>
pn  radiance                             <none>
ii  sane-utils                           1.0.25-2+b1
ii  texlive-binaries [texlive-base-bin]  2016.20160513.41080-8
ii  transfig                             1:3.2.6-3
ii  ufraw-batch                          0.22-1
ii  xdg-utils                            1.1.1-1

-- no debconf information